package com.lizhipeng07.mapper;

import com.lizhipeng07.entity.User;
import java.util.List;

public interface UserMapper {
    int insertUser(User user);
    User selectUserById(Integer id);
    List<User> selectAllUsers();
    int updateUser(User user);
    int deleteUser(Integer id);
    User selectUserByUsername(String username);
}
